巻号一覧
124 巻, 9 号
選択された号の論文の6件中1～6を表示しています
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論文
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長谷川 忠大, 生田 幸士2004 年 124 巻 9 号 p. 305-310
発行日: 2004年
公開日: 2004/12/01
ジャーナル フリーWe developed a simple and effective coupling method “silicone rubber coupling method” for interconnecting modular micro fluidic devices such as “Biochemical IC Family” proposed by Ikuta. This coupling method utilizes thin silicone rubber films and the holder unit. The biochemical IC chips are stacked up into the holder unit. And reusable thin silicone rubber films formed by a polymer mold are sandwiched between the IC chips. This simple coupler provided a good seal under high pressure (>400 kPa). Moreover, the experiments of this method showed that the maximum leakage pressure increases while the thickness of the silicone rubber gets thin, differing from general sealing technology “O-ring”. Thin coupling part is effective in practical use. This method is useful not only for the biochemical IC chips but also other micro fluidic devices.抄録全体を表示PDF形式でダウンロード (5236K) -
木本 晃, 信太 克規2004 年 124 巻 9 号 p. 311-315
発行日: 2004年
公開日: 2004/12/01
ジャーナル フリーThis paper describes material discrimination by means of a multifunctional touch-sensor based on piezoelectric ceramics. In the proposed sensor, the electrical property and ultrasonic characteristic of an object are measured by the proposed sensor which is contacted to the object, and the information of the object is detected from their measured values. As the experiment, discrimination of four kinds of materials such as aluminum, polymer gel, acrylic resin and silicone rubber, and detection of the thickness are demonstrated from measurements of capacitance as the electrical property and propagation time as the ultrasonic characteristic by the proposed sensor. As a result, discrimination of four kinds of materials and detection of the thickness at the range between 10mm and 40mm were possible. Therefore, the usefulness of the proposed multifunctional touch-sensor was suggested.抄録全体を表示PDF形式でダウンロード (5045K) -
三田 信, 年吉 洋, 安宅 学, 藤田 博之2004 年 124 巻 9 号 p. 316-320
発行日: 2004年
公開日: 2004/12/01
ジャーナル フリーWe have successfully developed a novel micromechanism of random number generator (RNG) by using the silicon micromachining technique. The MEM(Micro Electro Mechanical)RNG produce a series of random numbers by using the pull-in instability of electrostatic actuation operated with a typical dc 150 volt. The MEM RNG is made by the deep reactive ion etching of a silicon-on-insulator(SOI) wafer, and is very small compared with the conventional RNG hardware based on the randomness of thermal noise or isotope radiation. Quality of randomness has been experimentally confirmed by the self-correlation study of the generated series of numbers. The MEM RNG proposed here would be a true random number generation, which is needed for the highly secured encryption system of today’s information technology.抄録全体を表示PDF形式でダウンロード (400K) -
田中 幸修, 吉岡 正浩, 中本 高道, 森泉 豊栄2004 年 124 巻 9 号 p. 321-326
発行日: 2004年
公開日: 2004/12/01
ジャーナル フリーAlthough GC/MS(Gas Chromatograph/Mass Spectrum) method is often used to analyze gases, a rapid and low-cost method is required. Since a gas detector tube is well known as a simple measurement method, we focused on it to perform bad-smell sensing for monitoring living environment. We developed a simple system for automatically and continuously measuring color change of the gas detector tube. It is originally a disposable one for manually measuring the gas concentration only once at a certain time. The developed system enables the real-time measurement of the gas concentration change and the reduction of the read-out error. In the present study, we proposed the method for eliminating the influence of the noise to determine the boundary of the color-change region. The measurements of methyl mercaptan and hydrogen sulfide were reproducibly performed under the humidity-rich environment using the proposed method.抄録全体を表示PDF形式でダウンロード (5024K) -
中川 宗栄, 馬場 一徳, 釘宮 豊人, 佐藤 公春, 本谷 秀堅2004 年 124 巻 9 号 p. 327-335
発行日: 2004年
公開日: 2004/12/01
ジャーナル フリーWe propose a CAD-based vision system that identifies an object using its ID-tag and downloads the object’s CAD data via the network. We present a CAD-based visual tracking system that uses a circular ID-tag, which is put to every object. The pattern inside of the tag represents the unique ID-number of each object. The system captures an image of the object, and recognizes its ID-number based on the image of the tag. In addition, our system estimates pose and position of the object relative to the camera based on the contour shape of the tag in the image. Once the pose and position are estimated, then the object can be visually tracked by means of a CAD-based method. The proposed method can track any object if it has the circular ID-tag.抄録全体を表示PDF形式でダウンロード (590K)
研究開発レター
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Takaaki Isoda, Naoki Takahara, Hiroki Imanaga, Shinya Hashizume, Ryosu ...2004 年 124 巻 9 号 p. 336-337
発行日: 2004年
公開日: 2004/12/01
ジャーナル フリーRecently, bio-microelectromechanical systems (Bio MEMSs) composed of a micro pump, mixer, valve, reactor, sensor, and an electric circuit on a chip, have being applied to biological or medical analyses. A microsensor mounted on a chip has been developed to measure the concentration of a one drop solution. The form of the microsensor on a chip was thin Cu electrodes of 12 mm2. The sensing function was evaluated by the concentration measurement of a solution (100nL) dropped on the microsensor, which could analyze electrolytes and amino acids. The electric resistance of the microsensor related well to the concentration of the solution. Further, the electric resistance of the sensor was related to light intensity that was irradiated to its surface. To measure the concentration of a solution, it is necessary to irradiate light of a constant intensity on the microsensor.抄録全体を表示PDF形式でダウンロード (2233K)
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